Alert archive / Colorado / Flash Flood Watches in 2009

Flash Flood Watch 1, NWS Pueblo, CO

July 26, 200911 counties in Colorado

NWS Pueblo, CO issued this flash flood watch at Jul 26, 2009, 10:39 AM MDT for 11 counties in Colorado. It took effect at Jul 26, 2009, 2:00 PM MDT. It was in force for 7 hr.

The area

The counties it named.

The facts

Issued: Jul 26, 2009, 10:39 AM MDT (16:39 UTC)
In effect from: Jul 26, 2009, 2:00 PM MDT
Expired: Jul 26, 2009, 8:58 PM MDT
In force: 7 hr
Issued by: NWS Pueblo, CO
Flood severity: None

Counties Alamosa County, CO, Chaffee County, CO, Costilla County, CO, Custer County, CO, El Paso County, CO, Fremont County, CO, Huerfano County, CO, Las Animas County, CO, Pueblo County, CO, Saguache County, CO, Teller County, CO

The radar

The Pueblo radar (KPUX), 101 km from the middle of the area, began a volume at 16:42 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The nearest sounding before it

Denver, CO (KDNR), launched 12:00Z, 4.7 hours before the alert went out and 262 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 187 J/kg
Mixed-layer CIN: -132 J/kg
Mixed-layer LCL: 921 m above ground
0-6 km bulk shear: 27 kt
0-1 km storm-relative helicity: -16 m²/s²
0-3 km storm-relative helicity: 41 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this flash flood watch went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Pueblo, CO wrote its last area forecast discussion before this flash flood watch went out at Jul 26, 4:25 AM MDT, 6 hours 14 minutes earlier.

Area forecast discussion, Jul 26, 4:25 AM MDT, 6 hours 14 minutes before

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Hazardous weather outlook, Jul 26, 7:07 AM MDT, 3 hours 32 minutes before

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In the hours before

Local storm report, Jul 26, 10:15 AM MDT, 24 minutes before

PRELIMINARY LOCAL STORM REPORT...CORRECTED
NATIONAL WEATHER SERVICE PUEBLO CO
1015 AM MDT SUN JUL 26 2009

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0620 PM     FLASH FLOOD      LA VETA PASS            37.61N 105.19W
07/25/2009                   HUERFANO           CO   TRAINED SPOTTER

            HEAVY RAIN PRODUCED MUDSLIDES ALONG AND NEAR THE WEST
            SIDE OF LA VETA PASS ON US HIGHWAY 160...CLOSED HIGHWAY.

&&

MN

The office that day

Everything else NWS Pueblo, CO issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jul 25, 6:09 PM MDT	Areal Flood Advisory	PUB	Fremont	2 hr
Jul 25, 7:50 PM MDT	River Flood Warning	PUB	Las Animas	3 hr
Jul 25, 7:51 PM MDT	Severe Thunderstorm Warning	PUB	Baca, Las Animas	114 min
Jul 25, 8:11 PM MDT	Areal Flood Advisory	PUB	Baca, Las Animas	3 hr
Jul 25, 8:36 PM MDT	Flash Flood Warning	PUB	Baca, Las Animas	6 hr
Jul 25, 9:56 PM MDT	Areal Flood Advisory	PUB	Bent, Otero, Prowers	3 hr
Jul 26, 2:27 PM MDT	Areal Flood Advisory	PUB	Huerfano, Las Animas	2 hr
Jul 26, 2:34 PM MDT	Areal Flood Advisory	PUB	El Paso	2 hr
Jul 26, 2:54 PM MDT	Flash Flood Warning	PUB	El Paso	96 min
Jul 26, 3:04 PM MDT	Areal Flood Advisory	PUB	Fremont, Teller	106 min
Jul 26, 3:12 PM MDT	Flash Flood Warning	PUB	Las Animas	3 hr
Jul 26, 3:38 PM MDT	Areal Flood Advisory	PUB	Custer, Fremont, Saguache	3 hr
Jul 26, 4:26 PM MDT	Flash Flood Warning	PUB	Fremont	3 hr
Jul 26, 4:46 PM MDT	Flash Flood Warning	PUB	Custer, Huerfano, Pueblo	3 hr
Jul 26, 4:59 PM MDT	Severe Thunderstorm Warning	PUB	Huerfano, Las Animas, Otero, Pueblo	2 hr
Jul 26, 5:18 PM MDT	Flash Flood Warning	PUB	Huerfano, Las Animas	3 hr

Nearby

Flash Flood Watches in Colorado, 2009 Every flash flood watch in 2009

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.